| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.tez.common; |
| |
| import java.io.IOException; |
| import java.util.zip.Deflater; |
| import java.util.zip.DeflaterOutputStream; |
| import java.util.zip.InflaterInputStream; |
| |
| import org.apache.commons.io.IOUtils; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.classification.InterfaceAudience.Private; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FSDataOutputStream; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.fs.permission.FsPermission; |
| import org.apache.tez.client.TezClient; |
| import org.apache.tez.dag.api.TezConfiguration; |
| import org.apache.tez.dag.api.TezUncheckedException; |
| |
| import com.google.protobuf.ByteString; |
| |
| public class TezCommonUtils { |
| public static final FsPermission TEZ_AM_DIR_PERMISSION = FsPermission |
| .createImmutable((short) 0700); // rwx-------- |
| public static final FsPermission TEZ_AM_FILE_PERMISSION = FsPermission |
| .createImmutable((short) 0644); // rw-r--r-- |
| private static final Log LOG = LogFactory.getLog(TezClient.class); |
| |
| public static final String TEZ_SYSTEM_SUB_DIR = ".tez"; |
| |
| /** |
| * <p> |
| * This function returns the staging directory defined in the config with |
| * property name <code>TezConfiguration.TEZ_AM_STAGING_DIR</code>. If the |
| * property is not defined in the conf, Tez uses the value defined as |
| * <code>TezConfiguration.TEZ_AM_STAGING_DIR_DEFAULT</code>. In addition, the |
| * function makes sure if the staging directory exists. If not, it creates the |
| * directory with permission <code>TEZ_AM_DIR_PERMISSION</code>. |
| * </p> |
| * |
| * @param conf |
| * TEZ configuration |
| * @return Fully qualified staging directory |
| */ |
| public static Path getTezBaseStagingPath(Configuration conf) { |
| String stagingDirStr = conf.get(TezConfiguration.TEZ_AM_STAGING_DIR, |
| TezConfiguration.TEZ_AM_STAGING_DIR_DEFAULT); |
| Path baseStagingDir; |
| try { |
| Path p = new Path(stagingDirStr); |
| FileSystem fs = p.getFileSystem(conf); |
| if (!fs.exists(p)) { |
| mkDirForAM(fs, p); |
| LOG.info("Stage directory " + p + " doesn't exist and is created"); |
| } |
| baseStagingDir = fs.resolvePath(p); |
| } catch (IOException e) { |
| throw new TezUncheckedException(e); |
| } |
| return baseStagingDir; |
| } |
| |
| /** |
| * <p> |
| * This function returns the staging directory for TEZ system. Tez creates all |
| * its temporary files under this sub-directory. The function creates a |
| * sub-directory (<code>TEZ_SYSTEM_SUB_DIR</code>/<APP_ID>) under the base |
| * staging directory, often provided by user. |
| * </p> |
| * |
| * @param conf |
| * Tez configuration |
| * @param strAppId |
| * Application ID as string |
| * @return TEZ system level staging directory used for Tez internals |
| */ |
| @Private |
| public static Path createTezSystemStagingPath(Configuration conf, String strAppId) { |
| Path baseStagingPath = getTezBaseStagingPath(conf); |
| Path tezStagingDir; |
| try { |
| tezStagingDir = new Path(baseStagingPath, TEZ_SYSTEM_SUB_DIR); |
| FileSystem fs = tezStagingDir.getFileSystem(conf); |
| tezStagingDir = new Path(tezStagingDir, strAppId); |
| if (!fs.exists(tezStagingDir)) { |
| mkDirForAM(fs, tezStagingDir); |
| LOG.info("Tez system stage directory " + tezStagingDir + " doesn't exist and is created"); |
| } |
| } catch (IOException e) { |
| throw new TezUncheckedException(e); |
| } |
| return tezStagingDir; |
| } |
| |
| /** |
| * <p> |
| * This function returns the staging directory for TEZ system. Tez creates all |
| * its temporary files under this sub-directory. The function normally doesn't |
| * creates any sub-directory under the base staging directory. |
| * </p> |
| * |
| * @param conf |
| * Tez configuration |
| * @param strAppId |
| * Application ID as string |
| * @return TEZ system level staging directory used for Tez internals |
| */ |
| @Private |
| public static Path getTezSystemStagingPath(Configuration conf, String strAppId) { |
| Path baseStagingPath = getTezBaseStagingPath(conf); |
| Path tezStagingDir; |
| tezStagingDir = new Path(baseStagingPath, TEZ_SYSTEM_SUB_DIR); |
| tezStagingDir = new Path(tezStagingDir, strAppId); |
| return tezStagingDir; |
| } |
| |
| /** |
| * <p> |
| * Returns a path to store binary configuration |
| * </p> |
| * |
| * @param tezSysStagingPath |
| * TEZ system level staging directory used for Tez internals |
| * @return path to configuration |
| */ |
| @Private |
| public static Path getTezConfStagingPath(Path tezSysStagingPath) { |
| return new Path(tezSysStagingPath, TezConfiguration.TEZ_PB_BINARY_CONF_NAME); |
| } |
| |
| /** |
| * <p> |
| * Returns a path to store local resources/session jars |
| * </p> |
| * |
| * @param tezSysStagingPath |
| * TEZ system level staging directory used for Tez internals |
| * @return path to store the session jars |
| */ |
| @Private |
| public static Path getTezSessionJarStagingPath(Path tezSysStagingPath) { |
| return new Path(tezSysStagingPath, TezConfiguration.TEZ_SESSION_LOCAL_RESOURCES_PB_FILE_NAME); |
| } |
| |
| /** |
| * <p> |
| * Returns a path to store binary plan |
| * </p> |
| * |
| * @param tezSysStagingPath |
| * TEZ system level staging directory used for Tez internals |
| * @return path to store the plan in binary |
| */ |
| @Private |
| public static Path getTezBinPlanStagingPath(Path tezSysStagingPath) { |
| return new Path(tezSysStagingPath, TezConfiguration.TEZ_PB_PLAN_BINARY_NAME); |
| } |
| |
| /** |
| * <p> |
| * Returns a path to store text plan |
| * </p> |
| * |
| * @param tezSysStagingPath |
| * TEZ system level staging directory used for Tez internals |
| * @return path to store the plan in text |
| */ |
| @Private |
| public static Path getTezTextPlanStagingPath(Path tezSysStagingPath) { |
| return new Path(tezSysStagingPath, TezConfiguration.TEZ_PB_PLAN_TEXT_NAME); |
| } |
| |
| /** |
| * <p> |
| * Returns a path to store recovery information |
| * </p> |
| * |
| * @param tezSysStagingPath |
| * TEZ system level staging directory used for Tez internals |
| * @param conf |
| * Tez configuration |
| * @return App recovery path |
| * @throws IOException |
| */ |
| @Private |
| public static Path getRecoveryPath(Path tezSysStagingPath, Configuration conf) |
| throws IOException { |
| Path baseReecoveryPath = new Path(tezSysStagingPath, |
| TezConfiguration.DAG_RECOVERY_DATA_DIR_NAME); |
| FileSystem recoveryFS = baseReecoveryPath.getFileSystem(conf); |
| return recoveryFS.makeQualified(baseReecoveryPath); |
| } |
| |
| /** |
| * <p> |
| * Returns a path to store app attempt specific recovery details |
| * </p> |
| * |
| * @param recoveryPath |
| * TEZ recovery directory used for Tez internals |
| * @param attemptID |
| * Application Attempt Id |
| * @return App attempt specific recovery path |
| */ |
| @Private |
| public static Path getAttemptRecoveryPath(Path recoveryPath, int attemptID) { |
| return new Path(recoveryPath, Integer.toString(attemptID)); |
| } |
| |
| /** |
| * <p> |
| * Returns a path to store DAG specific recovery info |
| * </p> |
| * |
| * @param attemptRecoverPath |
| * :TEZ system level staging directory used for Tez internals |
| * @param dagID |
| * DagID as string |
| * @return DAG specific recovery path |
| */ |
| @Private |
| public static Path getDAGRecoveryPath(Path attemptRecoverPath, String dagID) { |
| return new Path(attemptRecoverPath, dagID + TezConfiguration.DAG_RECOVERY_RECOVER_FILE_SUFFIX); |
| } |
| |
| /** |
| * <p> |
| * Returns a path to store summary info for recovery |
| * </p> |
| * |
| * @param attemptRecoverPath |
| * TEZ system level staging directory used for Tez internals |
| * @return Summary event path used in recovery |
| */ |
| @Private |
| public static Path getSummaryRecoveryPath(Path attemptRecoverPath) { |
| return new Path(attemptRecoverPath, TezConfiguration.DAG_RECOVERY_SUMMARY_FILE_SUFFIX); |
| } |
| |
| /** |
| * <p> |
| * Create a directory with predefined directory permission |
| * </p> |
| * |
| * @param fs |
| * Filesystem |
| * @param dir |
| * directory to be created |
| * @throws IOException |
| */ |
| public static void mkDirForAM(FileSystem fs, Path dir) throws IOException { |
| fs.mkdirs(dir, new FsPermission(TEZ_AM_DIR_PERMISSION)); |
| } |
| |
| /** |
| * <p> |
| * Create a file with <code>TEZ_AM_FILE_PERMISSION</code> permission and |
| * returns OutputStream |
| * </p> |
| * |
| * @param fs |
| * Filesystem |
| * @param filePath |
| * file path to create the file |
| * @return FSDataOutputStream |
| * @throws IOException |
| */ |
| public static FSDataOutputStream createFileForAM(FileSystem fs, Path filePath) throws IOException { |
| return FileSystem.create(fs, filePath, new FsPermission(TEZ_AM_FILE_PERMISSION)); |
| } |
| |
| @Private |
| public static ByteString compressByteArrayToByteString(byte[] inBytes) throws IOException { |
| ByteString.Output os = ByteString.newOutput(); |
| DeflaterOutputStream compressOs = new DeflaterOutputStream(os, new Deflater( |
| Deflater.BEST_COMPRESSION)); |
| compressOs.write(inBytes); |
| compressOs.finish(); |
| ByteString byteString = os.toByteString(); |
| return byteString; |
| } |
| |
| @Private |
| public static byte[] decompressByteStringToByteArray(ByteString byteString) throws IOException { |
| InflaterInputStream in = new InflaterInputStream(byteString.newInput()); |
| byte[] bytes = IOUtils.toByteArray(in); |
| return bytes; |
| } |
| |
| } |